Syringe.



M. YOSHIDA.

SYRINGE.

APPLlcATloN FILED oEc.2.1917.

Patented Sept. 17, 1918.

)fis A ffy,

mnsnzo rosanna, or Los ANGELES', cntrronmn.

SYRINGE. Y

Specification of Letters Patent. Patented Sept. 17, 1918..

Application led December 28, 1917. Serial No. 209,262.

To aZZvwwm t may concern.' Y

Be it known that I, MAsAzo YosHmA, a

, subject of the Emperorof Japan, residing at Los Angeles, inthe county of Los Angeles and State ofCalifornia, have invented a new and useful Improvement in Syringes,

of which the following is a specification.YV

This inventionrelates to an improvement in syringes adapted for arterial and veinous injections, and its objects are to provide means for Vcollapsing containers to inject consecutively, different medicinal fluids, and to maintain each fluid without mixture with the remaining fluids. The device is applicable for hypodermic and other similarV Vinjections. 1 v

Other objects are kto Vprovide means for ejecting fluids of different character consecu-V tively, and with onel collapsing stroke to actuate the syringe, and to provide in combi- V*nation with a plurality of telesooping containers, detachable means whereby the Y syringe may be actuated with'one hand, and means whereby certain `of the telescoping members may be held in fixed relation to one another during a portion of theV collapsing stroke. u

Another object is to provide in a device of this character afplura'lity of tubular members having a relatively large capacity vin proportion to the size of the instrument when distended, yand to provide a series of graduations on each member, so that. each may be filled with a predetermined quantity of fluid, or in varying amounts as may be required. Y

Another object is to provide telescoping casings of glass or similar material, slidable Vrelative to one another, and leak-proof, and

arranged to form collapsible intercommunieating compartments.

This invention may be embodied in several constructions, the preferred form being shown in the drawing, and the essential features including tubular telescoping sections constructed of ground glass and forming intercommunicating chambers, and means for collapsing the sections to expel the contents, said means being detachable and removable by one hand of the operator during one collapsing stroke.

ln the drawings, Figure 1 is a side eleva tion of a syringe constructed in accordance with my invention. Fig. 2 is a sectional View of the same, the syringe being turned at an angle of ninety degrees. Fig. 3 is a perspective detail view of the finger-loop and detachable brace or bail.

Referring tothe drawings, the syringe consists of an outer tubular telescoping number 1, Yprovided with a nozzle 2, an inter-V Y mediate tubular telescoping member 3, slid aperture 4, in the inner end wall 5, and an inner tubular telescoping member 6, having a sealed end 7, and a handle 8. The outer and intermediate telescoping members 1 and 3 are readily separable one from another so that they may be filled with a fluid for `pur,- poses of injection, and each is adapted to be filled with A fluids `of a different character. Each tubeis provided with graduated divisions for measuring the quant-ity of fluid contained therein. VThe outertube l is provided with an annular flange 9, the intermediate tube withV anannular flange 10, and the inner tube with an annular flange l1.

The fully extended syringe may be longer than can be conveniently grasped by the single hand, and means Vfor avoiding such difli- Vculty, consist of an annular segmental sleeve 12, arranged to encircle the inner. tube 3, between the flange 1l and handle 8, and having pivotally connected thereto the finger- 'Y Vwhich expels the liquid or fluid contents of the different tubular members. A segmental spring sleeve l5 is adapted to engage the outer tubular member l adjacent to flange 9,

and is provided with linger-loops 16. TheV nozzle 2 is tapered to receive various tips, and in this'cas'e is provided with a hollow needle as shown, consisting of the bushing 17, and point 18. Y Y

In use, the outer member Vl is detached. The intermediate member is then filled with the required amount of fluid in thev usual manner by drawing out the inner member. The bail lll is then placed in engagement with the annular flange on the intermediate tubular Vmemberfthereby holding the inner and intermediate members in fixed relation to one another.' Then usino thel combined inner and intermediate memzbers as a plunger, the outer member is filled by suction, and if desired, by a solution of different character. The preferred ti is placed upon the nozzle ofthe outer mem er, and the device is collapsedto expel the contents. The

ing within member l and provided with an soY rst movement of the collapsing members Will force the Contents. of rthe outer member., Then by releasing`th vbailt Av'vitltle 'i handl` holding the device, the collapsing movemerjA 'bsiioe within tHe-father; Said-intermedi 2l' A syringe' comprising outer', intermediae, and iniierftelescping members, anfozzlf for" the outfei" telesopingj'member, a han-"- dle for" theinne'r" te'lesc'1o`ingVV member, a sleeveeng ingsaid handle, and "a vyoke pivotallvco'nii ted to' said* sleeveY aidengagiig said" E in'termediate'E telescoping f member;

svrirlg ooinpr'isiiig outer. intermedie alie', an'dlinner ,elfescopinglmemb rs, a 4n'oz'zle forl t A"e (')iteffVv telesoping meinber,K annular flanges onth'e outer' "and intermediate telesoopiiig'm'ember, a'handle on the' inner felge@ scoping member', and a-yoke pivtallfyoonneted to said handle andf engaging the flanges on tlileinermediate member;v

4.' s'yringe' Comprising' three telesoop'ing member, flangesl on the' outeran'd` intermedi.- ate telesoloping member, av'liandl-e on" the inner: tgeles'c'pig member, a2 d'eac'hable sleevej secured byfthe'han'dle, ail in'gerel'oop pvoiall'y connecdto said sleeve; afyoke 5; syriiig'th'e combination Ywith oon- Y an -inte'rinediatetube slidingfintlie 7; Asyringefcomprlsigreureif,intermedi; 

